Artikel i vetenskaplig tidskrift, 2010

Highly collimated multiple bipolar flows are detected with a 3 '' resolution in the HCO+ (J = 3-2) and HCN (J = 3-2) lines in the young planetary nebula NGC 7027 with the Submillimeter Array. The HCO+ and HCN flows coincide in location and velocity with compact and fast CO flows detected with similar to 6 '' resolutions with other millimeter arrays. The equatorial molecular torus of NGC 7027 is captured in HCO+ emission in the present observations. The HCO+ emission also closely follows the H-2 emission, indicating that the present observations probe the photon-dominated region of the molecular envelope of NGC 7027.

molecular

envelope

evolution

ISM: molecules

discovery

kinematics

photodissociation region

emission

hco+

planetary nebulae: individual (NGC 7027)

distance

planetary-nebula ngc-7027

Författare

Z. Y. Huang

Academia Sinica

National Taiwan University

T. I. Hasegawa

Academia Sinica

D.-V. Trung

Vietnamese Academy of Science and Technology Institute of Physics and Electronics